[vtkusers] how to quantify executing time

[Cory Quammen]

Oops... I learn something new every day.

On Thu, Feb 4, 2016 at 10:51 AM, David E DeMarle
<dave.demarle at kitware.com> wrote:
> Hi Chiang,
>
> Take a look at vtkTimerLog.h. Basically call StartLog, do something with
> VTK, and DumpLog. That will record the times taken within vtk to do various
> things like rendering and data processing.
>
> One key point to be aware of is containment, which is represented in the log
> by indentations. If you have some function A which calls B, A's time will
> include the time taken by B. The logs will look something like this:
> A 5 seconds
>   B 4 seconds
> which means that A spent only 1 second beyond what B did.
>
> A call to render will include calls to update filters whenever they are out
> of date, so Render will contain Filter.
>
> cheers
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>
> On Thu, Feb 4, 2016 at 6:40 AM, WangQ <wangq1979 at outlook.com> wrote:
>>
>> Hello vtkusers,
>>
>> I wonder if there is any way to measure the executing time from very
>> beginning till rendering finish in VTK? Seems conventional tic toc
>> inapplicable to VTK.
>>
>> It would be great if can separate computation time, e.g. time for
>> processing data, and rendering time.
>>
>> Cheers,
>>
>> Chiang
>>
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>
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at:
> http://www.vtk.org/Wiki/VTK_FAQ
>
> Search the list archives at: http://markmail.org/search/?q=vtkusers
>
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-- 
Cory Quammen
R&D Engineer
Kitware, Inc.